Fairing arch



April 2, 1957 Filed sept. 7, 1954 G. P. REINTJES FAIRING ARCH 2 Sheets-Sheet l IN V EN TOR.

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April 2, 1957 G. P. REINTJES v 2,787,227

FAIRING ARCH Filed Sept. 7, 1954 2 Sheets-Sheet 2 IN V EN TOR.

United States Patent O FAIRING ARCH George P. Reintjes, Kansas City, Mo. Application September 7, 1954, Serial No. 454,465

1 Claim. (Cl. 110-99) This invention relates to furnace arches and roofs and more particularly to constructions where roofs meet at different elevations or angles. No practical and economical means has yet been ldevised as far as I am aware to suspend or support a connection between two roofs of such character without the formation of an obstruction to air and gas Vflow which greatly reduces efhcient operation.

The chief object of my invention therefore is to construction a fail-ing arch connecting arches or roofs which are located in diffe-rent planes, in such a manner that no material abrupt offset or obstruction to smooth air or gas llow is formed, and todo this in such a lway that the construction is economically sound and practical.

With the general objects named in view and others as will hereinafter appear, the invention consists in certain new and useful features of construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the `accompanying drawings, in which:

Figure 1 is a perspective view of a furnace chamber v"having a pair of roofs connected by a fairin-g arch ernbodying the invention.

Figure 2 is an enlarged detail to show one method of supporting the fairing arch in stepped relation.

Figure 3 is a section through the construction shown in Figure 2.

In the said drawings, where like reference characters identify corresponding parts in all of the figures, 1 are upright steel supports of a furnace chamber or the like, and said supports carry cross beams 2 spanning the furnace, The floor and walls of the furnace are respectively indicated at 3 and 4. The arrangement shown herein is by way of example and is not to be considered as a limiting factor. In the drawing 5 is a sprung arch or a suspended curved roof, and 6 is a flat roof of any type. The two roofs are not coplanar; that is, parts of one are above or below the corresponding parts of the other.`

-In Figure 1, the ends of the curved arch 5 are below the plane of the arch 6, and then said .arch 5 curves upwardly until its center :is above the plane of the arch 6. With `such a construction, it is obvious that if the two larches come into abutment, there will be a liat Vertical wall or obstruction at their junction. Such a flat wall offers great obstruction and resistance 'to the ow of air or gas and leads to turbulence and a decrease in etlicient operation.

Therefore, the object of the invention is to connect the two roofs or arches in such a 'way that a relatively smooth unbroken contour or fairing merges one arch with the other. To be practical a construction of this kind must be economically sound, be readily repairable and subject to erection without constant engineering su- 2,787,227 Patented Apr. 2, 1957 pervision. To provide such a fairing arch a series of rods 7 depend `from the overhead steel, said rods supporting castings 8 from which a series of spaced bolts 9 depend, the ends of said bolts being threaded into hangers lil, which by preference are of T-shape, as shown. The threaded hangers may be vertically adjusted as needed to control stepping or projection of the refractory as will hereinafter appear. The heads of the castings 1i) may be received within. side pockets 11 formed in the upper ends of refractory l2 to support the same as shown.

The refractory 12 is preferably of the same cross sectional area but may vary slightly in length and is preferably suspended by longer or shorter bolts 9 so that the tire or exposed ends of the refractory are stepped, whereby when erosion occurs or the stepped corners are burned off, the resulting arch is substantially of the same thickness throughout.

With the arrangement shown, where the arches or roofs S and 6 have sections above and ,below the plane of the other arch, it will be apparent that the steps must be formed in two series in right-angular relation. In other words, considering a single row of refractory in Figure l, as a straight line from one roof to .the other, the steps of the refractory `on each hanger progress from the plane of one roof to `the plane of the other. The next adjacent row is also stepped correspondingly to the rst row, but each refractory in this series or row is stepped in relation to its companion or adjacent refractory in the same row, .to compensate for the curved or bowed contour of the arch 6. Thus each set of refractory suspended from a hanger comprises a unit in two series of stepping refractory, the series or rows being in right angular relation.

From the above description it will be apparent that I have produced a construction embodying .all of the features of advantage set forth as desirable, and while I have described and illustrated the preferred embodiment, it is to be understood that I reserve the right: to all changes within the spirit and scope of the appended claim.

I claim:

In a chamber, a pair of roofs in vertically spaced planes, at least one of said roofs being curved transversely, a fairing arch connecting said roofs, said fairing arch compn'sing a series of overhead supports, hangers depending from said supports, and a plurality lof refractories suspended from said hangers to form two sets of parallel rows of ref-factories, the first set of rows having the lower ends of the refractories progressively stepped longitudinally of one of Ithe roofs from the plane of one roof to the plane of the other roof, and the second set of refractory rows being at right angles to the rows of the irst set, the lower ends `of the refractories in the rows of the second set 'being progressively stepped between the plane of the highest to the plane of the lowest part of the curved roof.y

References Cited in the tile of this patent UNITED STATES PATENTS 1,528,256 McKenzie May 3, 1925 1,623,860 Benson Apr. 5, 1927 1,629,668 Lenk May 24, 1927 1,698,395 De Grand Ian. 8, 1929 1,757,682 `Palm May 6, 1930 1,772,797 Butz c Aug. 12, 1930 1,870,568 Hosbein Aug. 9, 1932 FOREIGN PATENTS 434,628 Germany Sept. 30, 1926 

